this seems like they haven't done their research at all - i find it surprising that they even thought a Model 3 would be a good police vehicle considering its dimensions. perhaps a better alternative is picking one of the many other EVs that are based on a ICE framework, which i presume would be much easier to modify as required?
It would be the same if some police force decided to purchase BMW Mini's, spent $100k retrofitting each for police work, and then complained that they were too small after the fact.
Total own goal!